{"product_id":"eaton-detroit-truetrac-differential-eat912a584-27-spline-dana-30-3-54-and-down-ratio","title":"Eaton Detroit Truetrac Differential EAT912A584, 27-Spline Dana 30, 3.54 and Down Ratio","description":"The Detroit Truetrac is a helical-gear style, limited-slip differential that maximizes wheel traction and enhances driving characteristics. Maintenance-free, it features smooth, automatic operation in forward and reverse.  Its versatility makes Detroit Truetrac the ideal traction solution for almost any type of vehicle.\nDetroit Truetrac® Differential; 27 Spline; 1.16 in. Axle Shaft Diameter; 3.54 And Down Ring Gear Pinion Ratio;Rear ; Dana 30\/Reverse; Applies To Non-Disconnect Only;\n\u003cul\u003e\n  \u003cli\u003eOptimized Torque Bias Ratios Deliver Max Acceleration And Handling\u003c\/li\u003e\n  \u003cli\u003eNo Special Lubrication Or Friction Modifiers Needed\u003c\/li\u003e\n  \u003cli\u003eHelical Gear Limited Slip Differential\u003c\/li\u003e\n  \u003cli\u003eDurable; Smooth; Quiet Operation\u003c\/li\u003e\n  \u003cli\u003eWorks In Forward And Reverse\u003c\/li\u003e\n  \u003cli\u003eIdeal For Most Vehicles\u003c\/li\u003e\n  \u003cli\u003eAutomatic Engagement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBrief Description:\u003c\/strong\u003e The Eaton Detroit Truetrac differential is a helical-gear limited-slip differential designed to improve wheel traction, acceleration, and handling without requiring driver input. Its automatic operation helps transfer torque to the wheel with available traction, supporting confident performance in forward and reverse.\u003c\/p\u003e\n\n\u003cp\u003eDesigned for Dana 30 applications with non-disconnect axle configurations, the Eaton Detroit Truetrac EAT912A584 features a 27-spline design and supports a 3.54-and-down ring gear and pinion ratio. Its smooth, quiet operation and maintenance-free construction make it a practical traction upgrade for a wide range of vehicles. No special lubrication or friction modifiers are required, simplifying installation and ongoing service.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Product Specifications \u0026amp; Technical Data:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBrand: Eaton\u003c\/li\u003e\n  \u003cli\u003eProduct: Detroit Truetrac limited-slip differential\u003c\/li\u003e\n  \u003cli\u003ePart Number: EAT912A584\u003c\/li\u003e\n  \u003cli\u003eDifferential Type: Helical-gear limited slip\u003c\/li\u003e\n  \u003cli\u003eAxle Spline Count: 27 spline\u003c\/li\u003e\n  \u003cli\u003eAxle Shaft Diameter: 1.16 inches\u003c\/li\u003e\n  \u003cli\u003eRing Gear and Pinion Ratio: 3.54 and down\u003c\/li\u003e\n  \u003cli\u003eApplication: Dana 30, rear, non-disconnect configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Included in the Box:\u003c\/strong\u003e One Eaton Detroit Truetrac differential assembly. Ring gear hardware, bearings, seals, installation components, and lubricant are not specified and should be verified before installation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e This differential is intended for Dana 30 applications using a non-disconnect axle configuration and compatible 27-spline axle shafts. Confirm axle configuration, spline count, shaft diameter, and gear ratio before purchase. Vehicle-specific fitment data should be verified against the application and drivetrain specifications.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOptimized torque-bias ratios help maximize acceleration and handling by directing torque toward the wheel with available traction.\u003c\/li\u003e\n\u003cli\u003eMaintenance-free design operates without special lubrication or friction modifiers when installed according to manufacturer requirements.\u003c\/li\u003e\n\u003cli\u003eHelical-gear limited-slip technology provides automatic engagement without requiring driver activation.\u003c\/li\u003e\n\u003cli\u003eSmooth, quiet, and durable operation supports reliable traction performance in both forward and reverse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eAir Freight Prohibited: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eNot Carb Approved: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLtl Freight Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eProp 65: Unknown\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePart Type: automotive\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eEpa: N\/A\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCarb Acknowledgement Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRegular Stock: t\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eUnits Per Sku: 1\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Eaton","offers":[{"title":"Default Title","offer_id":67646950146300,"sku":"912A584","price":986.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/6518\/3740\/files\/b99887b8556e01aff2bb11ec03f6c212_fb0f2b0d-8cf6-4d1e-850e-faea67f56fe3.jpg?v=1791183372","url":"https:\/\/diycustoms.store\/products\/eaton-detroit-truetrac-differential-eat912a584-27-spline-dana-30-3-54-and-down-ratio","provider":"diycustoms.store","version":"1.0","type":"link"}